The place is located in the center. Not far from the Makasan station and very close to major central areas. Was easy to go around.
Place is sparkling clean, has all the amenities you like, guarded 24/7, has a cheap parking below, located on an upper floor and has calm neighbors, there is a pool on the premises and a gym.
If you need a good breakfast, a great Bangkok Baking Company (BBCO) is located in Marriott lobby in about 800 meters walking. 7/11 is just around the corner in 150 meters.
Great stay and great value for money. Only difficulty - if you use taxis or grab to travel around, traffic is always heavy there due to road construction that is ongoing right now.